TITLE    : Howto create a JFS filesystem on a floppy diskette.
OS LEVEL : AIX 4.3.3 and AIX 5.1.0
DATE     : 09/11/2001
VERSION  : 1.0

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The undocumented option nointegrity of /usr/sbin/mount allows us to
use floppy disks (and maybe other removable media) as read/write jfs
filesystems under AIX 4.3.3:

1) Insert formatted floppy into drive
2) mkfs -V jfs /dev/fd0
   Device /dev/fd0:
     Standard empty filesystem
     Size:           2880 512-byte (UBSIZE) blocks
     Initial Inodes: 512
3) mount -o nointegrity /dev/fd0 /mnt

You can even automount it with an appropriate entry in
/etc/auto_direct:

/floppy -fstype=jfs,rmv,nointegrity     :/dev/fd0